简介：Segmentingacomplex3Dsurfacemodelintosomevisuallymeaningfulsub-partsisoneofthefundamentalproblemsindigitalgeometryprocessing.Inthispaper,anovelsegmentationapproachofpoint-sampledsurfacesisproposed,whichisbasedonthelevelsetevolutionscheme.Tosegmentthemodelsoastoalignthepatchboundarieswithhighcurvaturezones,thedrivenspeedfunctionforthezerolevelsetinsidenarrowbandisdefinedbytheextendedcurvaturefield,whichapproacheszerospeedasthepropagatingfrontapproacheshighcurvaturezone.Theeffectivenessoftheproposedapproachisdemonstratedbyourex-perimentalresults.Furthermore,twoapplicationsofmodelsegmentationareillustrated,suchaspiecewiseparameterizationandlocaleditingforpoint-sampledgeometry.

简介：Avague-set-basedfuzzymulti-objectivedecisionmakingmodelisdevelopedforevaluatingbiddingplansinabid-dingpurchaseprocess.Agroupofdecision-makers(DMs)firstindependentlyassessbiddingplansaccordingtotheirexperienceandpreferences,andtheseassessmentsmaybeexpressedaslinguisticterms,whicharethenconvertedtofuzzynumbers.Theresultingdecisionmatricesarethentransformedtoobjectivemembershipgradematrices.Thelowerboundofsatisfactionandupperboundofdissatisfactionareusedtodetermineeachbiddingplan’ssupporting,opposing,andneutralobjectivesets,whichtogetherdeterminethevaguevalueofabiddingplan.Finally,ascorefunctionisemployedtorankallbiddingplans.Anewscorefunctionbasedonvaguesetsisintroducedinthemodelandanovelmethodispresentedforcalculatingthelowerboundofsat-isfactionandupperboundofdissatisfaction.Inavague-set-basedfuzzymulti-objectivedecisionmakingmodel,differentvalua-tionsforupperandlowerboundsofsatisfactionusuallyleadtodistinctrankingresults.Therefore,itiscrucialtoeffectivelycontainDMs’arbitrarinessandsubjectivitywhenthesevaluesaredetermined.

简介：Inthisstudy,wereportanefficientCdTe-SnO2quantumdot（QD）solarcellfabricatedbyheat-assisteddrop-castingofhydrothermallysynthesizedCdTeQDsonelectrospunSnO2nanofibers.Theas-preparedQDsandSnO2nanofiberswerecharacterizedbydynamiclightscattering（DLS）,UV–Visspectroscopy,photoluminescence（PL）spectra,X-raydiffraction（XRD）andtransmissionelectronmicroscopy（TEM）.TheSnO2nanofibersdepositedonfluorine-dopedtinoxide（SnO2）andsensitizedwiththeCdTeQDswereassembledintoasolarcellbysandwichingagainstaplatinum（Pt）counterelectrodeinpresenceofcobaltelectrolyte.TheefficiencyofcellswasinvestigatedbyanchoringQDsofvaryingsizesonSnO2.Thebestphotovoltaicperformanceofanoverallpowerconversionefficiencyof1.10%,anopen-circuitvoltage（Voc）of0.80V,andaphotocurrentdensity（JSC）of3.70mA/cm2wereobtainedforcellswithSnO2thicknessof5–6μmandcellareaof0.25cm2understandard1Sunillumination（100mW/cm2）.Theefficiencywasinvestigatedforthesamesystemsunderpolysulfideelectrolyteaswellforacomparison.